84042501 has 4 divisors (see below), whose sum is σ = 112056672. Its totient is φ = 56028332.

The previous prime is 84042479. The next prime is 84042521. The reversal of 84042501 is 10524048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84042501 - 2²¹ = 81945349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84042521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14007081 + ... + 14007086.

It is an arithmetic number, because the mean of its divisors is an integer number (28014168).

Almost surely, 2^84042501 is an apocalyptic number.

It is an amenable number.

84042501 is a deficient number, since it is larger than the sum of its proper divisors (28014171).

84042501 is a wasteful number, since it uses less digits than its factorization.

84042501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28014170.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 84042501 is about 9167.4697163394. The cubic root of 84042501 is about 438.0257642108.

Adding to 84042501 its reverse (10524048), we get a palindrome (94566549).

The spelling of 84042501 in words is "eighty-four million, forty-two thousand, five hundred one".